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Mitral valve analysis using a novel 3D holographic display: a feasibility study of 3D ultrasound data converted to a holographic screen

  • Jan Otto BeitnesEmail author
  • Lars Gunnar Klæboe
  • Jørn Skaarud Karlsen
  • Stig Urheim
Original Paper

Abstract

The aim of the present study was to test the feasibility of analyzing 3D ultrasound data on a novel holographic display. An increasing number of mini-invasive procedures for mitral valve repair require more effective visualization to improve patient safety and speed of procedures. A novel 3D holographic display has been developed and may have the potential to guide interventional cardiac procedures in the near future. Forty patients with degenerative mitral valve disease were analyzed. All had complete 2D transthoracic (TTE) and transoesophageal (TEE) echocardiographic examinations. In addition, 3D TTE of the mitral valve was obtained and recordings were converted from the echo machine to the holographic screen. Visual inspection of the mitral valve during surgery or TEE served as the gold standard. 240 segments were analyzed by 2 independent observers. A total of 53 segments were prolapsing. The majority included P2 (31), the remaining located at A2 (8), A3 (6), P3 (5), P1 (2) and A1 (1). The sensitivity and specificity of the 3D display was 87 and 99 %, respectively (observer I), and for observer II 85 and 97 %, respectively. The accuracies and precisions were 96.7 and 97.9 %, respectively, (observer I), 94.3 and 88.2 % (observer II), and inter-observer agreement was 0.954 with Cohen’s Kappa 0.86. We were able to convert 3D ultrasound data to the holographic display. A very high accuracy and precision was shown, demonstrating the feasibility of analyzing 3D echo of the mitral valve on the holographic screen.

Keywords

Echocardiography Valvular heart disease Other imaging 

Notes

Acknowledgments

We thank Dr. Andreas Abildgaard for beneficial input and suggestions to the final manuscript and professor Leif Sandvik for statistical advice. The project is supported by The Research Council of Norway, South-Eastern Norway Regional Health Authority. S. Urheim is recipient of research grants from The Research Council of Norway and Helse-Sør-Øst (South-Eastern Norway Regional Health Authority).

Conflict of interest

None.

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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Jan Otto Beitnes
    • 1
    Email author
  • Lars Gunnar Klæboe
    • 1
  • Jørn Skaarud Karlsen
    • 3
  • Stig Urheim
    • 1
    • 2
  1. 1.Department of CardiologyRikshospitalet, Oslo University HospitalOsloNorway
  2. 2.Institute for Surgical ResearchRikshospitalet, Oslo University HospitalOsloNorway
  3. 3.Kalkulo ASFornebuNorway

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